[mikehinton]

We already have a grid-intertie solar system. It is possible to have such a system, and also have a battery backup - you just have to have an inverter that will handle both functions. We don't have that setup yet, because when we installed our solar system 10 years ago, the "dual" inverters were far less efficient than the grid inverters. That's something we will look into when we expand our system.